Css icon not render correctly with oil.nvim

### Description when I use oil.nvim with web-devicons, the icon of css files is not rendered properly. ### Neovim version ```text NVIM v0.12.0-dev-390+g99384fcd9c Build type: RelWithDebInfo LuaJIT 2.1.1744317938 ``` ### nvim-web-devicons version 0422a19 ### Operating system and version Debian12 ### Windows variant _No response_ ### Expected behavior The CSS icon should be rendered. ### Actual behavior The css icon not render correctly. <img width="246" height="238" alt="Image" src="https://github.com/user-attachments/assets/a294f322-37a3-4b2d-99c4-47d302b50983" />